Answer:
A
Explanation:
2 answer choices you can cross out are the ones that have a +2t. The question says "Dropping at a steady rate of 2 degrees Celsius"
So cross out B & C.
Now at the end it states " Temperature was colder than -4 degrees Celsius"
That means the equality part will be smaller. Since negatives would be smaller when a number like -2.
Answer is A